A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-01-482-8017
NSN 5930-00-426-0733
NSN 7035-01-528-7870
NSN 5920-00-296-0454
NSN 5835-01-043-1576
NSN 5965-01-562-4667
NSN 5905-01-462-1214
NSN 5998-00-191-5303
NSN 5999-01-101-0911
NSN 5998-01-492-7710
NSN 6620-00-841-0346
NSN 5925-00-856-8103